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Find the Output: For loop without update clause

40Find the output of the following C code (assume #include <stdio.h> and that the code is inside int main(void)):
int i = 1, sum = 0;
for (; i < 20;) {
    sum += i;
    i = i * 2 + 1;
}
printf("%d %d", sum, i);
  • Option : B
  • Explanation : The body sees i = 1, 3, 7, 15; sum = 26 and the terminating i = 31.